Finding the Fourth Proportional to 12,649.62, 18,968.37 and 5,980.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,649.62 : 18,968.37 = 5,980.57 : x
2. Step 2: Convert to fraction form
   12,649.62/18,968.37 = 5,980.57/x
3. Step 3: Cross multiply
   12,649.62x = 18,968.37 × 5,980.57
4. Step 4: Simplify right side
   12,649.62x = 113,441,594.72
5. Step 5: Solve for x
   x = 113,441,594.72/12,649.62
6. Step 6: Final answer
   x = 8,967.98